TITLE:
Development and Characterisation of Natamycin Mini-Matrices Prepared by Hot-Melt Extrusion for Vaginal Delivery
AUTHORS:
Betül Rumeysa Temel, Işık Özgüney
KEYWORDS:
Hot Melt Extrusion, Natamycin, Controlled Release, Bioadhesive, Vaginal Delivery
JOURNAL NAME:
Journal of Materials Science and Chemical Engineering,
Vol.6 No.3,
March
26,
2018
ABSTRACT: In this study, bioadhesive mini-matrices of natamycin were prepared for vaginal application by hot-melt extrusion. In addition, melt viscosity measurements, thermogravimetric analysis, in vitro drug release studies and in vitro mucoadhesion test were performed. High molecular weight grades of KlucelTM hydroxypropylcellulose were used as a thermoplastic polymer. TEC and PEG 400 were chosen as plasticizer. According to the obtained results of melt viscosity measurements, the maximum torque of extrudates prepared using PEG 400 increased with increasing drug loading. The thermo-gravimetric analyses showed that natamycin is stable up to 198℃ and this result gives the opportunity to hot melt extrussion process at 90℃. In vitro drug release results showed that the release was extended up to 72 hours and drug release rate increased with increasing drug loading. In respect to the in vitro mucoadhesion test results, the values of work of mucoadhesion were found high as 771,977 mN.mm, 753,199 mN.mm, 686,356 mN.mm for the prepared hot melt extruded mini-matrices. Our results showed that the developed formulations were found worthy of further studies.